Distribution and use of electricity throughout the home. Electrical standards vary greatly worldwide, so providing your location in your question or your profile helps ensure you get answers that are relevant to you.

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2
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1answer
73 views

Why would two regular outlets stop working after I replaced GFCI outlets?

I replaced to gfci outlets and they are working fine, but two outlets on the same wall that are regular stopped working and are not receiving electricity. I checked and checked to see if I did the ...
2
votes
3answers
222 views

Do receptacles require a 20 ampere breaker?

I thought wall recepticles required a 20 amp breaker. Am I wrong?
2
votes
2answers
328 views

What gauge wire is needed to feed a 70 ampere panel 300 ft. away?

What gauge of wire do I need for direct burial for a 300 ft run for a 70 amp subpanel? I am going to install a 50 amp plug for a 5th wheel and eventually add some lights to a green house about 70 ...
2
votes
2answers
497 views

Adding USB Dual Port Charger Receptacle Blows Mains

I purchased a Hubbell "USB Dual Port Charger with 15A Duplex Receptacle" from Lowes to replace the duplex receptacle on my kitchen island. I first opened the circuit labelled for the island. The ...
2
votes
2answers
274 views

What's the amperage on a circuit breaker that's “linked” together?

On our circuit breaker, we have several circuits that are linked together by a metal handle. For instance, there are several cases of three 20A circuits all linked together, meaning you can only flip ...
2
votes
2answers
521 views

What type of wiring should bedroom overhead lighting have?

On the phone with a friend in Cali this morning. He said that some municipalities are requiring /4 (12-3 or 14-3 romex) wiring for all new construction or rewiring for overhead lighting components. ...
2
votes
1answer
4k views

What are the codes for electrical wiring in attics?

What is the typical code for wiring in attics? I understand these vary but what's best practice? Can you just have electrical wires exposed with all the junctions, in junction boxes, provided all the ...
2
votes
1answer
839 views

How do I test circuit breakers?

Suppose I need new circuit breakers and buy some at a local shop. How do I test them to be sure they haven't been damaged on their way from factory and will do their job when time comes?
1
vote
1answer
78 views

Two Three Way Switches w 14/2

I have an existing three way switch hooked up already, it works fine. I would like to add another three way switch by connecting another switch to the existing three way switch. Can this be done with ...
1
vote
1answer
665 views

Why isn't this 3-way wiring working?

Below is a diagram that I drew to help me rewire a couple of switches. The left switch is a standard 3-way switch. The right switch Cooper 275W-BOX combination single pole and 3-way switch. The single ...
1
vote
5answers
2k views

How can I locate and repair a break in a circuit?

After some effort, I have determined that there is a discontinuity between the wire from the breaker (hot wire) and the receptacle (socket). The breaker is okay because couple of other sockets in the ...
1
vote
1answer
4k views

Can dimmable (triac) LED bulbs be used on a motion sensor switch without neutral wire?

I bought a bunch of these motion sensor switches. I also want to use these dimmable LED bulbs. The motion sensors do not have a neutral wire connector. My outlets only have a live wire and it would ...
1
vote
2answers
7k views

What is causing a replacement ceiling fan light to flicker?

I had a Hunter ceiling fan with a light kit attached. It started making a humming sound and then a loud pop. This caused the circuit breaker to trip. After resetting the circuit breaker, the fan ...
1
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4answers
2k views

Is a duplex outlet's max amperage rating for each socket or the whole unit?

If you have a duplex outlet thats rated for lets say 20 amps, is the whole unit rated for 20 amps, or is each socket rated for 20 amps? Edit: So if I had a circuit that had a 40A breaker on it, could ...
35
votes
8answers
25k views

When I turn down the dimmer switch on my lights, do I actually use less electricity?

My wife and I have several lights on dimmer switches throughout our home. We generally prefer the ambient lighting provided by dimmed lights. I am curious, though, if we are saving any electricity by ...
15
votes
7answers
2k views

How do I safely replace a worn out electrical outlet?

I have a number of outlets that are old and worn out (plugs fall out of them mainly.) Obviously I need to turn off the breaker to replace them safely but any guidance on how to rewire them, how to ...
8
votes
2answers
3k views

What is the best option for hiding wires to wall mounted TV?

This is similar to this question, but in my case I'm not looking for the easiest solution but the most professional solution. I am torn between modular wall plates, and the type that just have a hole ...
6
votes
7answers
299 views

Projects to Pursue while Studs are Bare?

I'm stripping my small 950 sq. ft. 1950's-era home to the studs -- walls and ceiling -- so that I can install a vapor barrier and insulation in the walls and ceiling. While I have the studs available ...
6
votes
4answers
3k views

How Do I Plan for an Intrusion Detection System?

I would like to plan for an intrusion detection system in a home that is currently under construction. The home has a walkout basement that is sloping, shown in the rear elevation picture shown ...
4
votes
1answer
765 views

Replacing Halogen with LED bulbs

I've just purchased some 12V LED MR-16 bulbs, intending to use them to replace the existing 12V Halogen MR-16 bulbs in my bathroom. I have found, much to my chagrin, that the LED bulbs seem to have ...
3
votes
3answers
763 views

What are some computer interfacing electric energy meters on the market?

Does computer interfacing electric energy meters exist? With possibilities to get/log current power usage and monthly used kilowatt hours. With ethernet/rs232 etc interface. I am looking for this for ...
20
votes
4answers
2k views

Why would two circuit breakers be connected inside the service panel?

I was trying to locate the circuit breaker for an outlet in my garage and found a truly baffling setup. Two breakers control the same outlet (both plugs). After some head scratching, I opened the ...
17
votes
8answers
15k views

Why are “Wire Nuts” not used in the UK?

I have never seen a wire nut used in the UK, but they seem to be very common in the USA, why?
13
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3answers
5k views

Is there a device that will allow a bathroom fan to run for 5 minutes after it is switched off?

There is one switch that controls the lights and fan in the bathroom. Users turn the light/fan on when they enter, and off when they leave. I'd like for the bathroom fan to run for a time after they ...
13
votes
4answers
46k views

How do I properly wire GFCI outlets in parallel?

I have two countertop outlets in my kitchen that I am in the process of replacing with new, GFCI-protected outlets. These two outlets are on a circuit together, and they are the only loads on that ...
10
votes
1answer
3k views

How to replace a standard 2-gang light switch with an electric dimmer switch

I'm looking for a some assistance in fitting a new electric dimmer light switch. I'm in the UK if that makes a difference. I am trying to replace my existing two-gang light switch with a LightWaveRF ...
8
votes
5answers
3k views

Why do electricians prefer not to use the push-in connections on receptacles?

Why do electricians prefer not to use the back-stab or quick connect holes on switches and receptacles? If these were unreliable do you think they would be allowed by the NFPA and NEC?
7
votes
2answers
2k views

How can I determine if my outlets can easily be grounded?

I'm not sure what to do here. I just moved into a building and my outlets are all 2 prong outlets. Here is what I know of for sure: All the outlets are 2 prong outlets The bathroom outlet has the ...
7
votes
4answers
5k views

Can I replace an outlet that uses knob and tube wiring with a grounded outlet?

Can I replace an outlet that uses knob and tube wiring with a grounded outlet? Obviously the best choice would be to replace the old wiring. Is there a standard way to ground these outlets? Do I need ...
5
votes
1answer
634 views

What should I do about old cables that have been damaged?

I was replacing some drywall and noticed the wiring underneath has a couple of surface tears. House is from the sixties, but has been rewired with new Romex, except this circuit. Wire seems to be old ...
4
votes
1answer
3k views

How do I install electrical through stucco

Is there such a thing as an "old work" stucco junction box? Rather than cutting and flashing a 4" hole for a new junction box, can I cut a 1/2 hole for the non-metallic cable, and attach some sort of ...
1
vote
4answers
7k views

How do I wire a GFCI combination light switch when power enters at the light?

I have a Leviton 7299-NW GFCI/switch combo The diagrams in a response to the question "How do I wire a GFCI/switch combo?" is helpful. But I want to see a diagram for a situation where the power ...
32
votes
9answers
9k views

Which way is up? (electric outlet)

My house has electric outlets in both orientations. Which one is correct? Should the ground hole be at the bottom or the top? OR
14
votes
3answers
2k views

Is there ever a reason for reversing hot and neutral on a receptacle?

I moved into a new home and several receptacles have the hot and neutral reversed. I confirmed this with a basic receptacle tester. I opened one up and found the white wire on the brass terminal, ...
13
votes
3answers
1k views

Can I safely use a switch rated for “1A at 125V” with 240V, assuming I stay below 125W?

I recently purchased a foot switch for a standing lamp. The switch is rated for 1A at 125V. I would like to use this switch with a low energy lamp (typically 10W or below) but with a 240V supply. Is ...
12
votes
7answers
974 views

What's the least intrusive way to find out what's in a wall?

I'm getting ready to mount a flatscreen TV on our living room wall and would like to route various cables through it (e.g. surround sound speakers, HDMI, etc). I appreciate the AWESOME tips here, but ...
12
votes
3answers
704 views

What is “knob and tube wiring”?

I assume this is some USA wiring system, am I right?
11
votes
3answers
2k views

What size extension cord should I use for multiple computers?

We're hosting a LAN party (several computers, 50+) and I had some questions about power draw; I hope this is the right place to ask. Currently, we're assuming each PC will draw an average of 3.5 ...
10
votes
1answer
698 views

Humming Ceiling Fans

I have two Harbor Breeze 52in. Builders Series Ceiling Fans. Under normal operation these fans are smooth and quiet. However, during power outages like we've had recently, I use a Devilbiss 6000 ...
10
votes
4answers
829 views

How do I use three-prong appliances when my outlets are mostly two-prong?

I am living in a house where most electrical outlets are two prong. There are a smattering of three prong, in particular where an addition was put on. Am I hosed when it comes to where I can plug in ...
9
votes
2answers
5k views

How can I add a circuit breaker when there are no openings available in the neutral bus bar?

I'm trying to add a 20 amp circuit breaker into my existing main panel. The main panel has one vacant slot to put the breaker, but the neutral and ground bars have no more vacant slots. My question is ...
9
votes
5answers
57k views

How do I add more circuit breakers once the breaker box is full?

My house was completely rewired by the previous owner. They tore out all the old knob-and-tube and replaced it with modern wiring. I definitely appreciate this, but unfortunately they left ...
8
votes
1answer
42k views

Why is my air conditioner tripping the circuit breaker?

Our air conditioner recently stopped blowing out cold air. When I went to check on it, I noticed that the outside unit wasn't coming on. We had had problems with ants in the contacter in the past, ...
8
votes
3answers
6k views

Can I use two wire nuts instead of one to connect 6 wires inside a 3-gang box?

Is it considered acceptable practice to use two wirenuts in a situation where it is possible to use only one but may be easier to use two? I have a three-gang box with six cables coming into it. The ...
8
votes
1answer
3k views

How can I trace cable through floors and walls?

How can I work out where an electrical cable runs through walls/floors? I am building a circuit map of a 1941 house with unfinished basement. I shut off all circuits at the main service panel, switch ...
8
votes
3answers
4k views

What to do with an apartment with only 2-pronged outlets

I just rented an apartment (Colorado, for what it's worth RE code) that has 2-pronged outlets throughout the place except for two GFCI's, one in the bathroom and one in the kitchen. I bought the ...
8
votes
2answers
3k views

How can I stop bulbs from buzzing when dimmed?

I've got some hanging lights with "Fat Albert" bulbs that are plugged into a dimmer switch. When they're dimmed to certain levels, the bulbs make a soft buzzing sound. The buzz is amplified and ...
7
votes
2answers
593 views

Why were only some of my tools damaged when connected to a 240V receptacle?

I live in the US and recently bought a home. There are several electrical outlets in my garage. I have recently had two tools that have burned up and gone to an early grave. It turns out that the ...
7
votes
1answer
2k views

Any reason not to ground the sheathing of MX wire?

Having recently bought an older house (c1943) I am doing a little work on the place. While rewiring a light switch I noted that there is newer Romex wiring from the distribution panel to the switch, ...
7
votes
1answer
27k views

Light switch setup using only hot wire. Is it normal?

I was changing the light switches around the house when I came upon this setup. The two switches to the right are all wired using the hot wire (black) from the two electrical wire on the back panel. ...